diff --git a/extract.ini b/extract.ini
new file mode 100644
index 0000000..af46262
--- /dev/null
+++ b/extract.ini
@@ -0,0 +1,7 @@
+[lingua_python: **.py]
+
+[lingua_xml: **pt]
+
+[lingua_xml: **.xml]
+
+[lingua_zcml: **.zcml]
\ No newline at end of file
diff --git a/setup.cfg b/setup.cfg
index 5492a13..1829f2e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -5,11 +5,13 @@ directory = plone/dexterity/locales
 statistics = true
 
 [extract_messages]
+mapping_file = extract.ini
 copyright_holder = Plone foundation
 output_file = plone/dexterity/locales/plone.dexterity.pot
 msgid_bugs_address = dexterity-development@googlegroups.com
 width = 80
 charset = UTF-8
+sort_output = true
 
 [init_catalog]
 domain = plone.dexterity
diff --git a/setup.py b/setup.py
index 9a9f207..623a1bc 100644
--- a/setup.py
+++ b/setup.py
@@ -22,10 +22,6 @@ setup(name='plone.dexterity',
       packages=find_packages(exclude=['ez_setup']),
       namespace_packages=['plone'],
       include_package_data=True,
-      message_extractors = {"plone": [
-            ("**.py",    "chameleon_python", None),
-            ("**.pt"  ,  "chameleon_xml", None),
-            ]},
       zip_safe=False,
       install_requires=[
           # 'Acquisition',